Covid jab skipped vital safety checks 'due to time constraints', German Covid inquiry told
A former chief toxicologist for Pfizer said the mRNA jabs were not checked for any cancer causing properties
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Vital safety checks were not carried out on Covid vaccines before they were rolled out to millions, Germany’s pandemic inquiry has heard.
A former chief toxicologist for Pfizer said the mRNA jabs were not checked for any cancer causing properties “due to time constraints” which he said is “regrettable.”
Nor were proper checks done on its impact on pregnancy, the inquiry was told.
Dr Helmut Sterz, who worked as chief toxicologist for Pfizer Europe until 2008 gave evidence this month to Germany’s Covid Inquiry - known as the Corona Enquete Commission.
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During the hearing, Dr Sterz confirmed he had reviewed documents relating to the Pfizer-BioNTech mRNA vaccine - Comirnaty.
Dr Sterz has studied publicly available evidence and research papers, about the laboratory and human trials of the mRNA Covid vaccine and potential side effects.
Asked whether the vaccine had been fully tested before approval, he told the committee:
“No, the (cancer causing) carcinogenic risk was not investigated due to time constraints. Incidentally, I find it very concerning and also regrettable that no alternative investigations were carried out.”

A nurse holding a bottle of Pfizer coronavirus vaccine. The Pfizer coronavirus vaccine is 88 per cent effective against the Indian variant after two doses, a study by Public Health England (PHE) has found
| gbnewsHe added that a study on reproduction, fertility, pregnancy and newborn development had not been done to the necessary standards.
He said that in the countries of the European Union, the birth rate had decreased steadily after the beginning of the Covid vaccination campaign.
“A reproductive toxicity study in rats for (the mRNA vaccine) for Cominarty was conducted inadequately, and an important side effect, early abortions was not taken seriously. So no reliable estimates of the vaccine’s effect on pregnancy or subsequent development were possible.”
Dr Sterz, author of the book, ‘The Vaccine Mafia’, said the approval was granted under a fast-track procedure which meant several very important studies normally required for medicines were not completed.
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The former toxicologist also told the inquiry that the vaccine given to the public was not identical to the material used in laboratory animal and human trials
| Reuters“The approval was carried out according to … a fast-track procedure. This meant that essential toxicity studies were sacrificed to speed, without acceptable justifications. I know of no case with a comparable indication in which all these studies were omitted.”
He also told the inquiry that post-marketing safety reports should have triggered closer scrutiny.
“Pfizer’s post-marketing report spoke of 1,233 suspected deaths within just two months after approval. At the latest then, (the mNRA Covid jab) Comirnaty should have been taken off the market.”
Dr Sterz said official reporting systems, known as pharmacovigilance, underestimate side-effects because not every case is recorded.
“There is a high dark figure with these spontaneous reports due to underreporting. The real number is therefore much higher.”
He added that, in his view, the available data did not clearly demonstrate that the benefits outweighed the risks.
“In my view, not at all. (the mRNA Covid jab) Comirnaty was not even investigated in clinical development for the prevention of severe illness or death. The Pfizer documents therefore do not allow any recognition of a positive benefit-risk ratio at all for such side effects.”
The former toxicologist also told the inquiry that the vaccine given to the public was not identical to the material used in laboratory animal and human trials before marketing.

The German inquiry is expected to continue taking evidence from scientists, officials and critics of pandemic policy in the coming months
| Getty ImagesHe said: “For the clinical testing before approval, a highly pure substance was used. It was too expensive for mass production. The population received a vaccine that was produced with the help of the DNA of bacterium Escherichia coli. The result is significant contamination of the jab with bacterial DNA, and the consequence could be a significantly increased cancer risk.”
Speaking to GB News after giving evidence, Dr Sterz said he believed the “artificial anxiety and panic” created an urgency that led regulators to accept risks that would not normally be allowed.
“I was a toxicologist for 35 years for Pfizer and other drug companies. Because the virus was treated as if it was extremely deadly, it was decided that it was not necessary to do more toxicology at the time, and in my opinion this was completely wrong,” he said.
He said some long-term safety studies normally required for new medicines were not completed before approval despite the fact that the jabs were proposed for regular boosters.
“There was no study on carcinogenicity (cancer), which would normally take two to three years, which was obviously unacceptable for this seemingly public health urgency, and because it was an emerging virus the case was made not to do this type of safety study.
However, this could have been done differently and other tests could have been carried out to look at possible cancer-forming effects.”
He also questioned whether "reproductive safety" had been properly examined.
“There was no proper reproductive toxicology done on a second mammal species as guidelines stated. The study that was done in rats was not sufficient to give reliable answers.”
Dr Sterz added that post-marketing reporting systems only capture between one and ten percent of possible side-effects.
“The registered side-effects are often only the tip of the iceberg. Not every case is reported, and that means the real number of problems could be higher.”
He also raised concerns about the way the vaccine was manufactured at scale, saying the production process differed from the material used in early trials.
“For the clinical testing a highly pure substance was used, but for mass production another method was needed. That can lead to impurities such as bacterial DNA. I have no proof that this causes cancer, but it is a theoretical risk which should have been investigated more carefully.”
Dr Sterz is now calling for long-term independent research into the effects of the vaccines and the wider pandemic response.
“We need proper independent safety studies to understand what really happened. Without full transparency, people will not trust the conclusions,” he said.
He added that those harmed by the Covid jab “will not receive compensation if animal safety studies cannot prove the vaccine caused their injuries.”
He said the large numbers of post marketing side effects already logged with safety regulators - even though they do not prove the vaccine caused the injury - should be enough to trigger a pause on the use of future Covid vaccines and all new vaccines proposed that use the same technology until independent studies have shown they are safe.
Health regulators in the UK, Europe and the United States have repeatedly said that Covid vaccines met safety standards and saved large numbers of lives, and that serious side-effects are rare compared with the risks from the virus itself.
The German inquiry is expected to continue taking evidence from scientists, officials and critics of pandemic policy in the coming months.
Pfizer was approached for comment.










